Studies on extraction of active ingredients from Ligusticum chuanxiong by supercritical fluid extraction / 中草药

ABSTRACT

Object To study the conditions for the extraction of active ingredients in Ligusticum chuanxiong Hort by supercritical fluid extraction (SFE) Methods Conditions for the extraction were studied by orthogonal experimental design as guided by the content of ferulic acid presented in the extract Results The optimum conditions for the yield of ferulic acid were thus established Conclusion The best SFE conditions were temperature of the extraction pot was 70 ℃ under the pressure of 35 MPa, CO 2 as the modifier with the flow rate of 25 kg/h, the time for extraction was 2 5 h